assertion  retraction  graph  subject     predicate    object                                                            datatype    annotation
1          0           graph  DOID:10151  IAO:0000115  A bone cancer that is located in the short bones of lower limbs.  xsd:string  "{""oio:hasDbXref"":[{""datatype"":""xsd:string"",""meta"":""owl:Axiom"",""object"":""url:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6145567/""}]}"